Armbar

Last updated: April 16, 2026

What is an armbar?

The armbar is one of the oldest and most common joint-lock submissions in combat sports. Its Japanese name is juji-gatame (十字固め), which translates to “cross hold” and describes the shape the two bodies form when the submission is locked in, with the attacker perpendicular to the trapped arm. The technique travelled from Judo into Brazilian jiu-jitsu and then into MMA, where it has become a signature finish across every weight class and era of the sport.

Mechanically, the armbar works by isolating a single arm, pinning the wrist, and using the attacker’s hips as a fulcrum against the elbow joint. With the arm fully extended and the opponent’s thumb rotated upward, the elbow has nowhere to go. The attacker arches back, the joint reaches its maximum extension, and the defender either taps or gets injured. Because the whole body pulls against a single joint, strength matters less than position, which is why smaller grapplers can finish much bigger opponents with it.

The armbar appears in judo, sambo, catch wrestling, Brazilian jiu-jitsu, and MMA. Within the English-speaking grappling world, “armbar” specifically refers to the straight elbow lock with the opponent’s arm passed between the attacker’s legs, as described by Wikipedia’s armlock entry. Other arm attacks that twist the shoulder, like the kimura or americana, are categorised separately as armcoils rather than armbars.

How it works in a fight

Three things need to happen for an armbar to finish. The attacker has to isolate the arm by controlling the wrist and keeping the elbow pinned against the hip or thigh. Next comes full extension, with the hand rotated thumb-up to neutralise the biceps. Then the hips drive upward against the elbow while the attacker pulls the wrist down. Arm straight, thumb up, hips high. That is the finish.

In MMA, the setup usually comes from one of three positions. From the closed guard, the bottom fighter breaks posture, swings a leg across the opponent’s head, and rotates into the armbar as they fall back. The second path runs through full mount: the top fighter traps an arm as the opponent reaches up to defend strikes, then spins the leg over the head. Back control gives the third common entry, where a scramble or rolling motion exposes the far-side arm and opens the juji-gatame finish. All three setups share the same finishing mechanics once the arm is locked in place.

The armbar can end a fight in seconds. Frank Mir snapped Tim Sylvia’s radius with a straight armbar 50 seconds into the first round of their UFC 48 heavyweight title fight in 2004, with referee Herb Dean stopping the bout after the break, according to Tapology’s fight record. Ronda Rousey submitted Cat Zingano in a UFC record 14 seconds at UFC 184 using the same submission, per her UFC fighter profile. Those finishes show why the armbar is such a feared weapon: once the arm is straight and the hips are tight, there is rarely enough time to escape.

Armbar vs. other arm submissions

Most confusion around the armbar comes from mixing it up with other arm attacks. The table below clarifies the differences.

Submission	Target joint	Mechanism	Common name in Judo
Armbar	Elbow	Hyperextends the elbow by straightening the arm	Juji-gatame
Kimura	Shoulder (and elbow)	Rotates the arm behind the back, twisting the shoulder down	Gyaku ude-garami
Americana	Shoulder	Rotates the arm upward toward the head, like a “hi” wave	Ude-garami
Omoplata	Shoulder	Uses the leg to trap and rotate the shoulder forward	Ashi sankaku garami

The armbar is a straight-arm attack; the kimura and americana are bent-arm attacks. The kimura twists the shoulder by forcing the arm backward with a figure-four grip, while the armbar keeps the arm extended and attacks only the elbow. Fighters often chain these together: a defender who tucks their arm to escape an armbar can open themselves to a kimura, and vice versa.

Common variations

The straight armbar from guard or mount is the textbook version, but several variations appear regularly in MMA and grappling competitions.

Variation	Key difference
Flying armbar (tobi-juji-gatame)	Launched from standing; the attacker jumps and swings a leg over the head mid-air
Helicopter armbar	Combines an armbar with a tomoe nage throw, extending the arm mid-rotation
Shotgun armbar	The opponent’s wrist is placed in the attacker’s armpit, using the forearm as a fulcrum
Cutting armbar (arm crush)	Applied from closed guard, crushes the biceps over the radius rather than hyperextending the elbow
Spider web / triangle armbar	Attacker’s legs trap the arm in a figure-four while attacking the elbow

Each variation adapts the same finishing principle: isolate the arm, extend it, and pry the elbow against a rigid fulcrum. The flying armbar is rare in MMA because of the risk of landing poorly, but when it lands, it is one of the most dramatic finishes in the sport.

Armbar in MMA history

The armbar carries heavy history in mixed martial arts. Royce Gracie used it to submit Jason DeLucia at UFC 2 and Kimo Leopoldo at UFC 3 in 1994, and the image of the submission travelled worldwide through early UFC VHS tapes, as documented by BJJ Heroes. Rodrigo “Minotauro” Nogueira built a legendary PRIDE FC career around armbar finishes against Mark Coleman, Bob Sapp, and Mirko Cro Cop in the early 2000s.

Ronda Rousey turned the armbar into a global phenomenon. Nine of her 12 professional wins came by armbar, and she holds the record for most consecutive armbar finishes across UFC, WEC, PRIDE, and Strikeforce with six, according to her Wikipedia entry. Her judo background, particularly her entries to juji-gatame from the top, made her finishes look almost automatic until she was knocked out by Holly Holm in 2015.

Across UFC history, the armbar has accounted for roughly 15% of submission finishes, placing it behind only the rear-naked choke and the guillotine among the most common fight-ending holds, according to submission analyses compiled from UFCStats data. Peer-reviewed research in the Journal of Sports Medicine and Physical Fitness found that the overall UFC submission rate sits around 19.8%, with chokes accounting for 65.5% of those finishes and joint locks, including the armbar, making up the remaining 34.5%. The armbar remains a core technique that every serious MMA fighter drills, defends, and fears.

Frequently Asked Questions

Is the armbar the same as juji-gatame?

Yes. Juji-gatame is the Japanese name for the straight armbar, and the terms are used interchangeably in judo and BJJ. The full name in Judo is ude-hishigi-juji-gatame, meaning “cross arm lock.”

Can an armbar break your arm?

Yes. If the defender refuses to tap, full hyperextension of the elbow can tear ligaments, dislocate the joint, or snap the radius and ulna. Frank Mir broke Tim Sylvia’s radius with an armbar at UFC 48, and Rousey dislocated Miesha Tate’s elbow in their 2012 Strikeforce title fight.

Is the armbar legal in MMA?

Yes. The armbar is legal in every major MMA promotion, from the UFC down to regional shows, and it appears on nearly every professional fight card. It is one of the most commonly attempted submissions in the sport.

Who is the best armbar finisher in MMA?

By raw numbers, Ronda Rousey holds the most consecutive armbar finishes in modern MMA with six, per UFC record-keeping. Historically, Rodrigo Nogueira and Royce Gracie are also regarded as elite armbar specialists.

What is the difference between an armbar and an armlock?

“Armlock” is the umbrella term for any submission attacking the arm. The armbar is one specific armlock that targets the elbow by hyperextending the straight arm. Kimuras, americanas, and omoplatas are all armlocks but not armbars.

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Sources

1. Wikipedia. “Armlock.” Accessed April 2026.
2. Wikipedia. “Ude hishigi juji gatame.” Accessed April 2026.
3. Wikipedia. “Ronda Rousey.” Accessed April 2026.
4. Wikipedia. “Frank Mir.” Accessed April 2026.
5. BJJ Heroes. “The Armbar.” Accessed April 2026.
6. Tapology. “Frank Mir vs. Tim Sylvia, UFC 48.” Accessed April 2026.
7. UFC.com. “Rowdy Ronda Rousey: Official UFC Fighter Profile.” Accessed April 2026.
8. Journal of Sports Medicine and Physical Fitness. “Exploring submission finishes in the Ultimate Fighting Championship.” 2024.

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